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What impacts have sinkholes had on earth to this day.

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Corby Malone

on 31 July 2014

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Transcript of What impacts have sinkholes had on earth to this day.

What are the signs of a sinkhole before it happens?
Where do sinkholes most often occur?
Bibliography/ references
What impacts have sinkholes had on earth to this day?
SINKHOLES
By Corby M

What is a sinkhole and how are they formed?
How do sinkholes affect humans and other living things?
Sinkholes are a collapse in the surface layer of the earth. They can range in size from about 1m-600m+ in diameter and depth. They vary from bedrock chasms to soil encrusted bowls. They can be devastating if big enough and in a highly populated zone.

Sinkholes are formed by natural erosion's or gradually removal of a form of bedrock (e.g. limestone) from percolating water, a rupture of a cave roof, or lowering of the water table. Sinkholes often form throw the process of suffusion.For example, groundwater may dissolve the carbonate cement holding the sandstone particles together and then carry away the lax particles, gradually forming a void. Occasionally a sinkhole may have a visible opening into a cave below or perhaps a river or underground stream might be visible at the bottom.

The effects of a sinkhole vary depending on where and how it was formed. Natural sinkholes can be formed on either land or in the ocean. Yet some sinkholes formed because of a leak in a storm water pipe or the sewer system.

When naturally formed on land, sinkholes can change the general topography of the surrounding area and divert underground streams. If a sinkhole formed suddenly in a highly populated place they can do a lot of damage to humans and human property. Where as the man made sinkholes you can see the damage from miles and has to be repaired quickly.

Sinkholes can be very dangerous to building foundations, toxic chemicals can come up throw the sinkhole from the earth and can be very harmful to living things (because it pollutes the groundwater which things drink.

Florida is a very good example because sinkholes are very common there because of all the underground voids and drainage systems that have been carved into the carbonated rock.

Natural sinkholes can not be prevented, but the sinkholes formed by human inconvenience can be prevented over time.
-http://www.conserve-energy-future.com/causes-effects-and-types-of-sinkholes.php
-http://en.wikipedia.org/wiki/Sinkhole#Formation
There are no signs of a natural sinkhole it just happens without warning where as a man made sinkhole one made from underground pipes could be tracked to find the leak and fix it quickly to prevent a sinkhole from opening up. The reason for this is that when the carbonated rock dissolves you don't know when are how this is happening and then all of a sudden a sinkhole opens up.
Pictures of sinkholes
Sinkholes are quite frequently linked to Karst landscapes. In some places around the world there can be 100s even 1000s of sinkholes in one area, there are no above ground streams or rivers around some sinkholes because of the drainage of the sinkholes.
Sinkholes have caused massive destruction to the earth it has destroyed and killed a lot of humans. They cause huge damage to the world, it destroys landmarks, landscapes etc. Sinkholes even in highly populated areas it could kill people and animals, sinkholes even destroy habitats.
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